Hester Barrington-Ward1
- [S466] Notices, The Telegraph, London, UK. Hereinafter cited as The Telegraph.
Ann Teague1 
From 9 November 1760, her married name became Trevithick.1
Children of Ann Teague and Richard Trevithick
- Sarah Trevithick1
- Elizabeth Trevithick1 b. 1761
- Anne Trevithick1 b. 1763
- Prudence Trevithick1 b. 1765, d. 1775
- Mary Trevithick1 b. 1768, d. 1790
- Richard Trevithick+1 b. 13 Apr 1771, d. 22 Apr 1833
- Thomasina Trevithick1 b. 1773
- Alexander Trevithick1 b. 1779
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
Anne Trevithick1 
From 18 April 1791, her married name became Edwards.1
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
Richard Trevithick1 

He was an inventor and engineer. He constructed the first working railway steam locomotive.1
Children of Richard Trevithick and Jane Harvey
- John Harvey Trevithick1
- Francis Trevithick1
- Frederick Trevithick1
- Richard Trevithick1 b. 1798, d. 29 Dec 1872
- Ann Trevithick1 b. 1799, d. 1876
- Elizabeth Harvey Trevithick1 b. 1803, d. 1870
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
Thomasina Trevithick1 
From 7 December 1796, her married name became Vivian.1
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
Sarah Trevithick1
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
Alexander Trevithick1 
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
John Tyac1
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
William Edwards1
He was a carpenter.1
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
Jane Harvey1
From 7 November 1797, her married name became Trevithick.1
Children of Jane Harvey and Richard Trevithick
- John Harvey Trevithick1
- Francis Trevithick1
- Frederick Trevithick1
- Richard Trevithick1 b. 1798, d. 29 Dec 1872
- Ann Trevithick1 b. 1799, d. 1876
- Elizabeth Harvey Trevithick1 b. 1803, d. 1870
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.